Vector is base class of other vector like classes. It represents a series of vectors.
from py3d import Vector
Vector()
Vector([], dtype=float64)
Vector([0, 0, 0, 0])
Vector([0, 0, 0, 0])
Vector([1, 2, -4])
Vector([ 1, 2, -4])
Vector([1, 2, 3], (2,))
Vector([[1, 2, 3],
[1, 2, 3]])
import py3d
py3d.Vector([1, 2, 0, 3], ())
Vector([1, 2, 0, 3])
Vector([1], (2,))
Vector([[1],
[1]])
V32 = Vector([
[1, 3],
[2, -9],
[0.1, -3]])
V32
Vector([[ 1. , 3. ],
[ 2. , -9. ],
[ 0.1, -3. ]])
Get unit vector
V32.U
Vector([[ 0.31622777, 0.9486833 ],
[ 0.21693046, -0.97618706],
[ 0.03331483, -0.99944491]])
Get length of vectors
V32.L
array([[3.16227766],
[9.21954446],
[3.0016662 ]])
from numpy import allclose
assert allclose(V32.U.L, [[1], [1], [1]])
Get homogeneous vector
V32.H
Vector([[ 1. , 3. , 1. ],
[ 2. , -9. , 1. ],
[ 0.1, -3. , 1. ]])
Get a series of random vectors
import py3d
py3d.Vector.Rand(2,3,4)
Vector([[[0.22474113, 0.69183926, 0.51454819, 0.0771514 ],
[0.24126081, 0.22665889, 0.58605615, 0.77943291],
[0.02605099, 0.93634542, 0.13199655, 0.52815278]],
[[0.19575171, 0.19511996, 0.71167459, 0.76857765],
[0.26047448, 0.37595527, 0.24778486, 0.05661005],
[0.83906306, 0.15462282, 0.34348479, 0.88143718]]])
import py3d
py3d.Vector([[0,0],[1,2],[3,4]]).diff()
Vector([[1, 2],
[2, 2]])
Read pcd file
import py3d
py3d.read_pcd("py3d/doc/ascii.pcd").xyz.as_point()
import py3d
pcd = py3d.read_pcd("py3d/doc/binary.pcd")
pcd.xyz.as_point()
pcd.to_pcd("test.pcd")